/* eslint-disable */
require("script-loader!file-saver");
require("script-loader!./Blob");
require("script-loader!xlsx/dist/xlsx.core.min");
// import XLSX from "xlsx"
import XLSX from "xlsx-style";

function generateArray(table) {
  var out = [];
  var rows = table.querySelectorAll("tr");
  var ranges = [];
  for (var R = 0; R < rows.length; ++R) {
    var outRow = [];
    var row = rows[R];
    var columns = row.querySelectorAll("td");
    for (var C = 0; C < columns.length; ++C) {
      var cell = columns[C];
      var colspan = cell.getAttribute("colspan");
      var rowspan = cell.getAttribute("rowspan");
      var cellValue = cell.innerText;
      if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;

      //Skip ranges
      ranges.forEach(function(range) {
        if (
          R >= range.s.r &&
          R <= range.e.r &&
          outRow.length >= range.s.c &&
          outRow.length <= range.e.c
        ) {
          for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
        }
      });

      //Handle Row Span
      if (rowspan || colspan) {
        rowspan = rowspan || 1;
        colspan = colspan || 1;
        ranges.push({
          s: {
            r: R,
            c: outRow.length
          },
          e: {
            r: R + rowspan - 1,
            c: outRow.length + colspan - 1
          }
        });
      }

      //Handle Value
      outRow.push(cellValue !== "" ? cellValue : null);

      //Handle Colspan
      if (colspan) for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
    }
    out.push(outRow);
  }
  return [out, ranges];
}

function datenum(v, date1904) {
  if (date1904) v += 1462;
  var epoch = Date.parse(v);
  return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}
var defaultCellStyle = {
  font: {
    name: "宋体", sz: 11, color: { auto: 1 } ,
  },
  // border: {
  //   color: { auto: 1 },
  //  top: { style: 'thin' },
  //  bottom: { style: 'thin'},
  //  left: { style: 'thin' },
  //  right: { style: 'thin' }
  // },
  alignment: {
    /// 自动换行
    wrapText: 1,
      // 居中
    horizontal: "center",
    vertical: "center",
    indent: 0
  }
};
function sheet_from_array_of_arrays(data, opts) {
  var ws = {};
  var range = {
    s: {
      c: 10000000,
      r: 10000000
    },
    e: {
      c: 0,
      r: 0
    }
  };
  for (var R = 0; R != data.length; ++R) {
    for (var C = 0; C != data[R].length; ++C) {
      if (range.s.r > R) range.s.r = R;
      if (range.s.c > C) range.s.c = C;
      if (range.e.r < R) range.e.r = R;
      if (range.e.c < C) range.e.c = C;

      // var cell = {
      //   v: data[R][C]
      // };
      var cell = {v: data[R][C], s: defaultCellStyle};

      if (cell.v == null) continue;
      var cell_ref = XLSX.utils.encode_cell({
        c: C,
        r: R
      });

      if (typeof cell.v === "number") cell.t = "n";
      else if (typeof cell.v === "boolean") cell.t = "b";
      else if (cell.v instanceof Date) {
        cell.t = "n";
        cell.z = XLSX.SSF._table[14];
        cell.v = datenum(cell.v);
      } else cell.t = "s";

      ws[cell_ref] = cell;
    }
  }
  if (range.s.c < 10000000) ws["!ref"] = XLSX.utils.encode_range(range);
  return ws;
}

function Workbook() {
  if (!(this instanceof Workbook)) return new Workbook();
  this.SheetNames = [];
  this.Sheets = {};
}

function s2ab(s) {
  var buf = new ArrayBuffer(s.length);
  var view = new Uint8Array(buf);
  for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xff;
  return buf;
}

export function export_table_to_excel(id) {
  var theTable = document.getElementById(id);
  console.log("a");
  var oo = generateArray(theTable);
  var ranges = oo[1];

  /* original data */
  var data = oo[0];
  var ws_name = "SheetJS";
  // console.log(data);

  var wb = new Workbook(),
    ws = sheet_from_array_of_arrays(data);

  /* add ranges to worksheet */
  // ws['!cols'] = ['apple', 'banan'];
  ws["!cols"] = [
    {
      wpx: 80
    },
    {
      wpx: 80
    },
    {
      wpx: 80
    },
    {
      wpx: 80
    }
  ];
  ws["!merges"] = ranges;

  /* add worksheet to workbook */
  wb.SheetNames.push(ws_name);
  wb.Sheets[ws_name] = ws;

  var wbout = XLSX.write(wb, {
    bookType: "xlsx",
    bookSST: false,
    type: "binary"
  });

  saveAs(
    new Blob([s2ab(wbout)], {
      type: "application/octet-stream"
    }),
    "test.xlsx"
  );
}

function formatJson(jsonData) {
  console.log(jsonData);
}
// export function export_json_to_excel(th, jsonData, defaultTitle) {

//     /* original data */
//     const autoWidth =true
//     var data = jsonData;
//     data.unshift(th);
//     var ws_name = "SheetJS";

//     var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);

// if (autoWidth) {
//     /*设置worksheet每列的最大宽度*/
//     const colWidth = data.map(row => row.map(val => {
//       /*先判断是否为null/undefined*/
//       if (val == null) {
//         return {
//           'wch': 20
//         };
//       }
//       /*再判断是否为中文*/
//       else if (val.toString().charCodeAt(0) > 255) {
//         return {
//           'wch': val.toString().length * 2
//         };
//       } else {
//         return {
//           'wch': val.toString().length
//         };
//       }
//     }))
//     /*以第一行为初始值*/
//     let result = colWidth[0];
//     for (let i = 1; i < colWidth.length; i++) {
//       for (let j = 0; j < colWidth[i].length; j++) {
//         if (result[j]['wch'] < colWidth[i][j]['wch']) {
//           result[j]['wch'] = colWidth[i][j]['wch'];
//         }
//       }
//     }
//     ws['!cols'] = result;
//   }
//     /* add worksheet to workbook */
//     wb.SheetNames.push(ws_name);
//     wb.Sheets[ws_name] = ws;

//     var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});
//     var title = defaultTitle || '列表'
//     saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), title + ".xlsx")
// }
// 对此方法进行修改，如下：
export function export_json_to_excel({
  multiHeader2 = [], // 第一行表头
  multiHeader = [], // 第二行表头
  header, // 第三行表头
  data,
  filename, //文件名
  merges = [], // 合并
  autoWidth = true,
  bookType = "xlsx",
  myRowFont = ["1"],
  tableheader = tableheader
} = {}) {
  /* original data */
  filename = filename || "列表";
  data = [...data];
  if (header != []) {
    data.unshift(header);
  }

  for (let i = multiHeader2.length - 1; i > -1; i--) {
    data.unshift(multiHeader2[i]);
  }

  for (let i = multiHeader.length - 1; i > -1; i--) {
    data.unshift(multiHeader[i]);
  }
  //
  var ws_name = "SheetJS";
  var wb = new Workbook(),
    ws = sheet_from_array_of_arrays(data);

  if (merges.length > 0) {
    if (!ws["!merges"]) ws["!merges"] = [];
    merges.forEach(item => {
      ws["!merges"].push(XLSX.utils.decode_range(item));
    });
  }
  if (autoWidth) {
    console.log(data);
    /*设置worksheet每列的最大宽度*/
    const colWidth = data.map(row =>
      row.map(val => {
        /*先判断是否为null/undefined*/
        if (val == null) {
          return {
            wch: 20
          };
        } else if (val.toString().charCodeAt(0) > 255) {
          /*再判断是否为中文*/
          return {
            wch: val.toString().length * 2
          };
        } else {
          return {
            wch: val.toString().length
          };
        }
      })
    );
    /*以第一行为初始值*/
    let result = colWidth[0];
    for (let i = 1; i < colWidth.length; i++) {
      for (let j = 0; j < colWidth[i].length; j++) {
        if (result[j] != undefined) {
          if (result[j]["wch"] < colWidth[i][j]["wch"]) {
            result[j]["wch"] = colWidth[i][j]["wch"];
          }
        }
      }
    }
    ws["!cols"] = result;
  }

  /* add worksheet to workbook */
  wb.SheetNames.push(ws_name);
  wb.Sheets[ws_name] = ws;
  var dataInfo = wb.Sheets[wb.SheetNames[0]];
  // console.log(dataInfo)
  // return
  // const borderAll = {  //单元格外侧框线
  //     top: {
  //       style: 'thin'
  //     },
  //     bottom: {
  //       style: 'thin'
  //     },
  //     left: {
  //       style: 'thin'
  //     },
  //     right: {
  //       style: 'thin'
  //     }
  // };
  // //给所以单元格加上边框
  // for (var i in dataInfo) {
  //   if (i == '!ref' || i == '!merges' || i == '!cols' || i == 'A1') {

  //   } else {
  //     dataInfo[i + ''].s = {
  //       border: borderAll
  //     }
  //   }
  // }
  //设置主标题样式
  // dataInfo["A1"].s = {
  //   font: {
  //     name: '宋体',
  //     sz: 18,
  //     color: {rgb: "ff0000"},
  //     border:true
  //   },
  //   alignment: {
  //     horizontal: "center",
  //     vertical: "center",
  //   },
  //   fill: {
  //     fgColor: {rgb: "FFFFFF"},
  //   },
  // };
  // 这是表头行的样式
  var tableTitleFont = {
    font: {
      name: "宋体",
      // color: {rgb: "ff0000"},
      bold: true
    },
    alignment: {
      horizontal: "center",
      vertical: "center"
    }
  };
  if (tableheader == undefined) {
    for (var b in dataInfo) {
      if (b.indexOf(myRowFont) > -1) {
        if (b.length == 2) {
          dataInfo[b].s = tableTitleFont;
        }
      }
    }
  }
  if (tableheader == "2") {
    for (var b in dataInfo) {
      if (b.indexOf("1") > -1 || b.indexOf("2") > -1) {
        if (b.length == 2) {
          dataInfo[b].s = tableTitleFont;
        }
      }
    }
  }

  var wbout = XLSX.write(wb, {
    bookType: bookType,
    bookSST: false,
    type: "binary"
  });
  saveAs(
    new Blob([s2ab(wbout)], {
      type: "application/octet-stream"
    }),
    `${filename}.${bookType}`
  );
}
